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dc.contributor.authorMahfouz, Remi
dc.contributor.authorBouhrara, M.
dc.contributor.authorKim, Y.
dc.contributor.authorWågberg, T.
dc.contributor.authorGoze-Bac, C.
dc.contributor.authorAbou-Hamad, Edy
dc.date.accessioned2015-09-29T05:31:40Z
dc.date.available2015-09-29T05:31:40Z
dc.date.issued2015-09-18
dc.identifier.citationProperties of K,Rb-intercalated C60 encapsulated inside carbon nanotubes called peapods derived from nuclear magnetic resonance 2015, 118 (11):114305 Journal of Applied Physics
dc.identifier.issn0021-8979
dc.identifier.issn1089-7550
dc.identifier.doi10.1063/1.4931146
dc.identifier.urihttp://hdl.handle.net/10754/578846
dc.description.abstractWe present a detailed experimental study on how magnetic and electronic properties of Rb,K-intercalated C60 encapsulated inside carbon nanotubes called peapods can be derived from 13C nuclear magnetic resonance investigations. Ring currents do play a basic role in those systems; in particular, the inner cavities of nanotubes offer an ideal environment to investigate the magnetism at the nanoscale. We report the largest diamagnetic shifts down to −68.3 ppm ever observed in carbon allotropes, which is connected to the enhancement of the aromaticity of the nanotube envelope upon intercalation. The metallization of intercalated peapods is evidenced from the chemical shift anisotropy and spin-lattice relaxation (T1) measurements. The observed relaxation curves signal a three-component model with two slow and one fast relaxing components. We assigned the fast component to the unpaired electrons charged C60 that show a phase transition near 100 K. The two slow components can be rationalized by the two types of charged C60 at two different positions with a linear regime following Korringa behavior, which is typical for metallic system and allow us to estimate the density of sate at Fermi level n(EF).
dc.language.isoen
dc.publisherAIP Publishing
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/jap/118/11/10.1063/1.4931146
dc.rightsArchived with thanks to Journal of Applied Physics
dc.titleProperties of K,Rb-intercalated C60 encapsulated inside carbon nanotubes called peapods derived from nuclear magnetic resonance
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.identifier.journalJournal of Applied Physics
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Chemistry, School of Science and Technology, Nazarbayev University, 010000 Astana, Republic of Kazakhstan
dc.contributor.institutionDepartment of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
dc.contributor.institutionDepartment of Physics, Umeå University, 901 87 Umeå, Sweden
dc.contributor.institutionnanoNMRI Group, UMR5587, Université Montpellier II, Place E. Bataillon, 34095 Montpellier, Cedex 5, France
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personMahfouz, Remi
kaust.personAbou-Hamad, Edy
refterms.dateFOA2018-06-14T09:21:09Z


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